Moritz laemmel



MORITZ LAEMMEL, OF BAY RIDGE-NEW YORK.

Letters Patent No. 84,632, dated December' 1, 1868.

MECHANICAL MOVEMENT.

The Schedule refened to in these Letters Patent and making part ol'- the same.

Tojall 'whom it mag/'concern Be it known that I, MORITZ LAEMMEL, of Bay Ridge, county of Kings, and State of New York, have invented a new and improved Mechanical AMotion; and I do hereby declare the following to be a full, clear, and exact description thereof, which will enable those skilled in the art to make and use the same, reference being had to the accompanying drawing, forming part of this specification, in which drawing-- v Figure l represents a longitudinal vertical section of this invention.

Figure 2 is a sectional plan or top view thereof.

Similar letters indicate corresponding parts.

IIhis'invention consists in the arrangement Vof an which connect with the shaft by clutch-pulleys or other equivalent mechanism, and to which an oscillating'motion is imparted by hand or foot-power, in such a manner that by adjusting thezshaft closer to or furf ther from the peripheries of the lever-segments, the leverage of said segments can be increased or diminished as circumstances may require. The invention consists also in the arrangement of a dog and friction-strap, inV combination with a pulley mounted firmly on the shaft, and with a lever-segment mounted loosely on said shaft, in such a mauner that by turningthe lever-segment in one direction the friction-strap is caused to bind on the pulley, and the shaft is compelled to turn with the lever-segment, and by turning the lever-segment in the opposite di rection, the friction-strap releases its pulley, and the shaft remains stationary. n

A represents a frarne made of wood or any other suitable material, capable of supporting the working' parts of my mechanical motion. In thefsi'de rails of this frame are two oblong slots, a, which form the bearings for the shaft B to which a rotary motion is to be imparted. N Y

,On this shaft are firmly mounted two pulleys, b, between the arms of the lever-segment C, which turn loosely on the shaft, and-which are. provided with oblong slots c, so that the shaft can be adjusted closer to or further from their peripheries.V

This purpose is eifected by means of a hand-lever, D, which is secured to a rockshaft, d, from which extend two arms e, which connect by rods f with the shaft B, so that by .turning the hand-lever, said shaft is made to slide backward or forward in theslots a of the frame, and in the slots c of the lever-segments.

Between theV arms of the lever-segments and the pulleys b, are the cheek-pieces g, which turn loosely on the shaft B, and these cheek-pieces form the bearings for the fulcrum-pins h'of the dogs E.

From these dogs extend the friction-straps t' round the pulleys b, one'end'of each strap being fastened to the inner, and the other end to the outer part of yone of the dogs, as clearly shown in iig. 1 of thedrawing,

so that when one of the dogs is turned down in the direction ofk the arrow thereon in'ig. l, its frictionstrap is caused to clutch its pulley, and the shaft B is compelledto tnrn with the -dog but when the dog is turned in` the direction opposite to said arrow, the friction-strap releases its pulley, and the shaft Bremains stationary.

Springs, j, serve to lthrow the dogsfand frictionstraps back to their'original position as soon Vas the pressure on the dogs ceases. adjustable shaft in combination with lever-segments,

The cheek-pieces g are connected at their outer ends to the leversegrnents C by vmeans of the pins h, which slide in slots in the arms of said`segmeuts-- Each of these segments connects, by. a rope or chain,

l, with a treadle or hand-leven, F, and said segments are connected together by a rope, m, which passes round a sheave, n, so that if one ofthe segments is depressed, the other rises, and m'ce tersa. By alternately ldepressing the treadles F, therefore, a continuous revolving motion is imparted to the shaft B.

This mechanical motion is intended particularly for velocipedes, and the object ofv making'the shaft B adjustable, is to enable the'operator to increase the lever age of the segments C in going uphill, and to decrease it and increase the velocity when thevelocipede is to be propelled on a level surface, and it is obvious that the adjustable shaft is applicable with any other clutch-` mechanism, such as ratchetfwheels, and pawls or dogs catching in grooved pulleys, and I therefore reserve vthe right to change this portion of my invention as circumstances may make-r desirable,

- Having thus described my invention,

What Iclaim as new, and desire to secure by Letters Patent, is-

l. Thearrangement of an adjustable shaft B, in combination with lever-segments O, operated alternately by treadles or hand-levers, and connected to the shaft B by clutch-pulleys, or other equivalentV mechanism, substantially in the `manner and for the purpose shown and described.

2. The arrangement of a dog, E, and friction-strap t', v

in combination with a pulley, b, lever-segment C, and

, shaft B, substantially as and for the purpose set forth This specification signed by me, this 13th day of October, 1868: l

MORITZ LAEMMEL.-

hWitnesses:

W. HAUTE,- Ennnsr F. KAsTENHUBER. 

